PANDIANGAN, N.; SUKONO, S.; HASBULLAH, E. S. Quadratic Investment Portfolio Based on Value-at-risk with Risk-Free Assets: For Stocks of the Mining and Energy Sector. International Journal of Energy Economics and Policy, [S. l.], v. 11, n. 4, p. 175–184, 2021. Disponível em: https://www.econjournals.com/index.php/ijeep/article/view/11165. Acesso em: 20 apr. 2024.